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Micro-plastics have occupied almost every part of the planet today, including the most distant reaches.

The Arctic is far from clean, though it s rarely stepped in by visitors. Melanie Bergmann, a marine ecologist (海洋生态学家) and her colleagues had been studying plastics on the Arctic seafloor since 2002. In deep sea, they found about 6,0000 particles (微粒) in every 2.2 pounds of mud. In sea ice, there were as much as 12,000 pieces per 34 ounces of melted ice.

Scientists measured micro-plastics in snow from this distant location and found a lot, which could only have caught rides on the wind. The study raises concerns about the pollution that micro-plastics brought to the air, bringing a health risk to people and animals that breathe them in. But they are less worried about the threat that breathed-in pollutants have to wildlife than about polluted snow going into water.

The science on the health effects of micro-plastics is still going on.“For human health, we now now very little," says micro-plastics researcher Chelsea Rochman, “There is a lot of concern. For wildlife, we know that micro-plastics may go into every level of the food chain." Laboratory studies find some physical and chemical effects from micro-plastics, but the findings vary by the plastic type, shape experiments will be carried out soon with use of equipment if financial support approves."

Even worse is the threat from airborne micro-plastics in the area---too small to be noticed and may actually enter cells. Research on that also has been done and it could be a bigger problem, according to Rochman.

【小题1】What can you learn from the data in Paragraph 2?
A.Visitors rarely step into the Arctic.
B.Micro-plastics threaten the human beings.
C.Micro- plastics are everywhere in the world.
D.The Arctic suffers serious micro-plastics pollution.
【小题2】What makes the scientists worry most?
A.Wildlife's threat by micro-pollutants.
B.Human beings breathing micro-plastics in.
C.Micro-plastics entering the water ecosystem.
D.Micro-plastics pollution worsening global warming.
【小题3】What will the following paragraphs talk about?
A.Damage of micro-plastics to health.
B.Appeals for environmental protection.
C.Findings about airborne micro-plastics in the Arctic.
D.Measures to solve micro-plastics pollution.
【小题4】In which section of a newspaper may this text appear?
A.Science.B.Health.
C.Education.D.Entertainment.
2021·四川资阳·一模
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I remember when I got my first well-paid job right out of college, I still had low self-esteem (自尊) and self-doubt. 【小题1】 So what is the secret to success and why is it so hard for us to achieve it? Here are the top two things that I’ve found truly successful people all have in common.

【小题2】

People who find true success don’t achieve it by accident. They are very intentional and do the hard work to figure out what matters to them most. 【小题3】

The ones who achieve true success know that life isn’t about making life easier, it’s about making yourself stronger. And the only way to get yourself stronger is to stop sitting on the sidelines letting life go by and give everything your best shot.

Keep their minds out of survival mode (模式).

There’s a special part in your brain. 【小题4】 Usually fears that kick in will force your brain into survival mode. When you are in survival mode, you don’t spend enough time on what changes you can make to get yourself out of it. So how do you get your brain out of survival mode? 【小题5】 Meditation (冥想) can help you get out of survival mode and activate the part of your brain that is capable of very important functions needed to help you change your situation.

A.I still felt like a failure.
B.There is no easy path to success.
C.Take full ownership of their own story.
D.Live a life someone else tells you to live.
E.What it does is that it looks out for your survival.
F.The answer lies in finding time to give yourself a safe space.
G.The part of me that I know deep down can make an impact on the world.

David Bennett, a 57-year-old man from the US, received the world’s first pig heart transplant in January. He died two months later, on March 9.

It may sound like a failure, but it actually is a big step forward in medical history towards xenotransplantation (异种器官移植) success.

Xenotransplantation has been a hot topic in medical research for many years, as doctors and scientists look for ways to solve the big problem of organ transplant waiting lists. In the US alone, over 100,000 patients are on a list waiting for new organs. Many of them will die before getting their chance to receive a heart, lung or kidney. Therefore, medical science has turned to animal organs.

Doctors have experimented with xenotransplantation since the early 20th century. There are few success stories. Usually, patients’ bodies reject (排斥) the animal organs. Bennett lived much longer than other xenotransplant patients. That’s because scientists removed pig genes that would cause fast rejection. Then they added human genes to help the body accept the organ.

“A lot of new information will come out that will help the field move forward at a faster pace,” Muhammad Mohiuddin, director of the transplant program, told The Guardian.

Aside from Bennett’s gene-edited pig heart, late last year doctors at New York University achieved some success in attaching pig kidneys to human blood vessels outside the body in patients on life support. Meanwhile, at the University of Alabama, doctors managed to actually implant gene-edited pig kidneys into a patient on life support.

Though these recent successes were short-lived, they show that there may be a way forward for xenotransplants.

【小题1】Why do scientists study xenotransplantation?
A.Because many of its experiments are successful.
B.Because animal organs are the same as humans’.
C.Because human-donated organs are easily rejected.
D.Because human-donated organs are in short supply.
【小题2】What helped Bennett live longer than other xenotransplant patients?
A.The organ was gene-edited to avoid fast rejection.
B.Bennett’s heart was put into another patient’s body.
C.The transplanted heart was attached outside of his body.
D.The transplanted organ was from a pig, not other animals.
【小题3】What can we infer from the last paragraph?
A.Xenotransplants is developing step by step.
B.Patients with xenotransplants won’t die in the future.
C.Xenotransplant experiments will only fail sometimes.
D.Gene-editing is a mistake in the field of xenotransplants.
【小题4】Where can we most probably read this article?
A.In a novel.B.In a newspaper.C.In a guidebook.D.In a poster.

We all know that friends are special people who we share our lives with, and who share their lives with us in return. But seeking friends and keeping the friendship going are never easy.

According to research recently published in the Journal of Social and Personal Relationships, the key is to use “we-talk”.

Led by University of California psychologist Megan Robbins and her colleague, the researchers reviewed and analyzed 30 different studies involving over 5,000 participants. This largest-ever analysis “we-talk” suggested that the frequent use of “we” and “us” is linked to happier and healthier relationships.

The word “we” moves people from an individual position into a partnership, which makes us more interdependent. “The pronouns offer an insight into whether people see themselves as individuals or as part of a whole… Word use is a window into what people are thinking and feeling without asking them,” Robbins told Science Daily.

Their research also found that “we-talk” is helpful for solvi ng conflicts. “The primary point is that interdependence may bring about supportive and relationship-centered behaviors and positive perceptions of the partner—especially important in times of stress and conflict,” according to a statement released by Robbins’ lab.

US-based magazine Psychology Today used the word “union” to describe the impact on a partner upon hearing “we-talk”.

Contrary to “we-talk”. there is “I-talk”, which refers to the frequent use of first-person-singular pronouns, such as “I”, “me” and “mine”, when writing or speaking.

Earlier this year, researchers from the University of Arizona, US, analyzed set of data that came from 4.700 people in Germany and the US. They found that too much “I-talk” was an accurate linguistic marker for the likelihood that someone is feeling stressed or experiencing negative emotions.

“If you are speaking in a personal context—so you’re speaking about something that’s of relevance to you”, lead researcher Allison Tackman told The Independent. “But if you’re communicating in a context that’s more impersonal, such as describing a picture, we did not see the relationship emerge.”

As you can see from the two studies, too much “I-talk” can make you feel depressed. But “we-talk” can encourage you to become more positive and create a chain effect of healthy interdependence with others.

So next time you’re talking to a friend, try using more “we-talk”. You may find yourself feeling more positive and the effect it will have on your friend will be positive as well.

【小题1】According to Megan Robbin and her colleagues’ research, we can infer the following EXCEPT ____.
A.Too much “I-talk” always shows pressure or depression.
B.“We-talk” makes us more dependent on each other.
C.The more we use “we” and “us”, the happier we may feel.
D.“We-talk” may help us build better teamwork in our work.
【小题2】What can be the benefit of “we-talk”?
A.We may avoid arguments and conflicts with it.B.It may help promote friendship in our life.
C.It can help produce a feeling of individualism.D.We can become more independent of others.
【小题3】What does the underlined part in Paragraph 8 mean?
A.A person tends to use “I-talk” too much if he is experienced.
B.“I-talk” is an exact linguistic marker for people’s feelings.
C.If person uses “I-talk” a lot, he is probably in a bad mood.
D.Someone likes “I-talk” in an impersonal context.
【小题4】What is the main idea of the passage?
A.Using “we-talk” contributes to building good social relationships.
B.The importance of choosing the word in our daily conversation.
C.Using too much “I-talk” may lead you to become upset.
D.Introduction to “we-talk” in our daily communication.

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